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In this study, the effect of road construction on local wind field was evaluated using Envi-metTM, a numerical microscale atmospheric model. The change of wind pattern which had an impact on cattle sheds nearby was also analyzed by modeling wind patterns before and after a road construction carried out near Huam Bridge in Seocheon-Gun located in the Seocheon-Gongju Highway. The result shows that the wind velocity was expected to decrease by 25% with the change of wind direction.